{"id":"F2006B05590","name":"AD/PA-28/30 - Engine Mount Tubes - Inspection","slug":"ad-pa-28-30-engine-mount-tubes-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46637,"registerId":"commonwealth-F2006B05590-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/30 - Engine Mount Tubes - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-28 Series Aeroplanes\n\n \n\nAD/PA-28/30 Engine Mount Tubes - Inspection 3/71\n\nApplicability:  Model PA-28R-180 with S/Nos. 28R-30004 to 28R-31265 and Model PA-28R-200 with S/Nos. 28R-35001 to 28R-35659 except those with engine mounts S/Nos. S51 and subsequent.\n\n \n\nDocument: Piper SL No. 568.\n\n \n\nCompliance: Within 100 hours time in service after 31 March 1971 and thereafter at intervals not exceeding 100 hours time in service until repaired or modified in accordance with SL 568.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1598},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original 1971 directive. The scope remains limited to the specific aircraft models and serial numbers originally identified as having potential engine mount defects."},"complexity_factors":["Multiple specific serial number ranges in applicability section","Exception clause excluding engine mounts with serial numbers S51 and subsequent","Cross-reference to external technical document (Piper Service Letter 568) for repair standards","Compliance measured in 'time in service' (flight hours) rather than calendar dates"],"plain_english_summary":"This directive mandates safety inspections of engine mount tubes on specific Piper Cherokee Arrow aircraft to prevent structural failure.\n\n**Who it affects**\nOwners and operators of:\n- Piper PA-28R-180 aircraft (serial numbers 28R-30004 to 28R-31265)\n- Piper PA-28R-200 aircraft (serial numbers 28R-35001 to 28R-35659)\n\n**Important exception**: Aircraft with engine mounts numbered S51 or higher are exempt.\n\n**What you must do**\nInspect the metal tubes that hold the engine to the airframe:\n- First inspection within 100 flight hours after 31 March 1971\n- Repeat inspections every 100 flight hours after that\n- Keep inspecting until the aircraft is repaired or modified according to Piper Service Letter No. 568\n\n**Why it matters**\nCracked or damaged engine mounts can cause the engine to separate from the aircraft in flight. This rule ensures potential cracks are found before they become catastrophic."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection","history":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection/history","analysis":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection/analysis","conflicts":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection/conflicts","importantCases":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection/important-cases","documents":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection/documents"}}